package com.shujia.day04;

public class Code11Test {
    public static void main(String[] args) {
//        int a = 10;
//        int b = 20;
//        System.out.println("a:" + a + ",b:" + b);  // 10 20
//        change(a, b);
//        System.out.println("a:" + a + ",b:" + b); // 10 20

        int[] arr = {1, 2, 3, 4, 5};
        change(arr);
        System.out.println(arr[1]); // 4
    }

    public static void change(int a, int b) {
        System.out.println("a:" + a + ",b:" + b);  // 10 20
        a = b;
        b = a + b;
        System.out.println("a:" + a + ",b:" + b); // 20 40
    }

    public static void change(int[] arr) {
        for (int x = 0; x < arr.length; x++) {
            if (arr[x] % 2 == 0) {
                arr[x] *= 2;
            }
        }
    }

}
